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AUTOSTAR INFORMATION
Last updated: 9 July 2001
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AUTOSTAR INFORMATION |
Subject: Satellite patches for v22eR Sent: Sunday, July 8, 2001 19:02:41 From: rseymour@wolfenet.com (richard seymour) To show the to-the-second rise-time (AOS) predictions for Satellite tracking in firmware v22eR, the patches are: Loc old new 89b0e e2 cd 89b22 e2 cd You can use the methods described in: http://www.weasner.com/etx/autostar/as_satellite_risetime.html The "raise AOS/LOS altitude to ten (or 15) degrees" patch is *exactly* the same as v22eH. So please read the first note at the above web address. That patch's data are: Location Old New 2cf88 5f cc 2cf89 4f 41 2cf8a ed 20 < - - make 70 for fifteen degrees 2cf8b 02 ed 2cf8c 86 00 2cf8d 40 4f 2cf8e ed ed 2cf8f 00 02 For what it's worth, i've tried some tracking, just starting the tracking when the countdown beeped... and, when the barrel finally lifted above the mud and obstructions and sky-brightness... there was the satellite, less than a degree ahead of my eyepiece... a quick up-slew and it was an easy-to-follow pass until i lost it nearly dead overhead. The "degree" of error could VERY well have been my pokey reaction time between "beep" and [enter]. have fun --dick (hmmm... i wonder if i can make it track when it beeps?...)
Subject: 22eH patches to raise satellite AOS... Sent: Monday, May 14, 2001 21:00:37 From: rseymour@wolfenet.com (richard seymour) Here is a patch for 22eH which will raise the satellite AOS/LOS point to (at least) ten or 15 degrees above the horizon. Location Old New 2cf88 5f cc 2cf89 4f 41 2cf8a ed 20 < - - make 70 for fifteen degrees 2cf8b 02 ed 2cf8c 86 00 2cf8d 40 4f 2cf8e ed ed 2cf8f 00 02 If you're willing to live with eight degrees for AOS/LOS, then it becomes a one-byte patch: (i.e. do ONLY this byte, none of the above) Loc Old New 2cf8d 40 41 As a reminder, the AOS to-the-second patch is: Location Old New 89c8b 8f 7a 89c9f 8f 7a and http://www.weasner.com/etx/autostar/as_patches.html is where to get a semi-automatic patching program. have fun --dick
Sent: Sunday, May 13, 2001 18:59:57 From: rseymour@wolfenet.com (richard seymour) The numbers for 22eH are: Location Old New 89c8b 8f 7a 89c9f 8f 7a The patch does not -increase- the Autostar's accuracy, it merely turns on "showing the seconds" as a part of the displayed time. Since 22eH AOS's in the murk of the horizon, a to-the-second display has become far less critical than when we were shaving seconds to match Heavens-Above's charts. IF you would rather -not- use a hex editor, the above two lines can be used in conjuction with a patch-program written by Jim Berry available at Mike Weasner's site: http://www.weasner.com/etx/autostar/as_patches.html Just put the above two lines in a text file, put an "R" as the first character in the two lines, and follow the instructions at Mike's site. have fun --dick (clouded out since the day after 22eH)
Sent: Wednesday, May 9, 2001 22:00:06 From: rseymour@wolfenet.com (richard seymour) With the advent of v22eF and its very low altitude Satellite Aquisition point, the to-the-second timing becomes less critical. It's very difficult to see even the brightest satellite at an elevation of between 2 and 6 degrees, so all we can do is start tracking and try to locate the satellite through the viewfinder (and then slew to it during tracking) as it rises higher. I'm looking to see if i can come up with a patch to allow choosing the AOS altitude... but i haven't hit it yet. Anyway: to give your AOS display a to-the-second readout, the patcher locations for v22eF are: Location Old New 89c8b D5 C0 89c9f D5 C0 Follow the instructions on Mike's site at http://www.weasner.com/etx/autostar/as_patches.html for the how-to-patch. have fun... --dick
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